Viby was first mentioned in 1331. The current castle was built by Charles IX of Sweden to his wife Kristina between 1622-1626. The Dutch Renaissance style castle was designed by Casper van Panten. After the Crown donated Vibyholm to Gustaf Gustafsson af Vasaborg it has been owned by several families. The castle was left to decay in the early 1700s, but restored by Gustaf Ulf Claesson Bonde af Säfstaholm in the 1730s. The next restorations were made in the early 1800s and between 1852-1854. Today Vibyholm is privately owned and not open to the public.
References:Visby Cathedral (also known as St. Mary’s Church) is the only survived medieval church in Visby. It was originally built for German merchants and inaugurated in 1225. Around the year 1350 the church was enlarged and converted into a basilica. The two-storey magazine was also added then above the nave as a warehouse for merchants.
Following the Reformation, the church was transformed into a parish church for the town of Visby. All other churches were abandoned. Shortly after the Reformation, in 1572, Gotland was made into its own Diocese, and the church designated its cathedral.
There is not much left of the original interior. The font is made of local red marble in the 13th century. The pulpit was made in Lübeck in 1684. There are 400 graves under the church floor.